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It is one of the instrumental errors that can affect the position of the target as perceived on the sky and its flux distribution. This effect will affect the results of astronomical observations if not corrected by an atmospheric dispersion corrector (ADC). In high-resolution spectrographs, in order to reach a radial velocity (RV) precision of 10\u00a0cm\u00a0s\u22121, an ADC is expected to return residuals at only a few tens of milliarcseconds (mas). In fact, current state-of-the-art spectrograph conservatively require this level of residuals, although no work has been done to quantify the impact of atmospheric dispersion. In this work, we test the effect of atmospheric dispersion on astronomical observations in general, and in particular on RV precision degradation and flux losses. Our scientific objective was to quantify the amount of residuals needed to fulfil the requirements set on an ADC during the design phase. We found that up to a dispersion of 100 mas, the effect on the RV is negligible. However, on the flux losses, such a dispersion can create a loss of \u223c2\u00a0per\u2009cent at 380\u00a0nm, a significant value when efficiency is critical. The requirements set on ADC residuals should take into consideration the atmospheric conditions where the ADC will function, and also all the aspects related with not only the RV precision requirements but also the guiding camera used, the tolerances on the flux loss, and the different melt data of the chosen glasses.<\/jats:p>","DOI":"10.1093\/mnras\/stz3256","type":"journal-article","created":{"date-parts":[[2019,11,20]],"date-time":"2019-11-20T20:11:04Z","timestamp":1574280664000},"page":"3515-3522","source":"Crossref","is-referenced-by-count":13,"title":["The impact of atmospheric dispersion in the performance of high-resolution spectrographs"],"prefix":"10.1093","volume":"491","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0979-513X","authenticated-orcid":false,"given":"B","family":"Wehbe","sequence":"first","affiliation":[{"name":"Instituto de Astrof\u00edsica e Ci\u00eancias do Espa\u00e7o, Universidade do Porto, CAUP, Rua das Estrelas, P-4150-762 Porto, Portugal"},{"name":"Departamento de F\u00edsica e Astronomia, Faculdade de Ci\u00eancias, Universidade do Porto, Rua Campo Alegre, P-4169-007 Porto, Portugal"}]},{"given":"A","family":"Cabral","sequence":"additional","affiliation":[{"name":"Instituto de Astrof\u00edsica e Ci\u00eancias do Espa\u00e7o, Universidade de Lisboa, Campus do Lumiar, Estrada do Pa\u00e7o do Lumiar 22, Edif. D, P-1649-038 Lisboa, Portugal"},{"name":"Departamento de F\u00edsica, Faculdade de Ci\u00eancias, Universidade de Lisboa, Campo Grande, P-1749-016 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1532-9082","authenticated-orcid":false,"given":"J H C","family":"Martins","sequence":"additional","affiliation":[{"name":"Instituto de Astrof\u00edsica e Ci\u00eancias do Espa\u00e7o, Universidade do Porto, CAUP, Rua das Estrelas, P-4150-762 Porto, Portugal"}]},{"given":"P","family":"Figueira","sequence":"additional","affiliation":[{"name":"Instituto de Astrof\u00edsica e Ci\u00eancias do Espa\u00e7o, Universidade do Porto, CAUP, Rua das Estrelas, P-4150-762 Porto, Portugal"},{"name":"European Southern Observatory, Alonso de C\u00f3rdova 3107, Vitacura, Regi\u00f3n Metropolitana, Chile"}]},{"given":"N C","family":"Santos","sequence":"additional","affiliation":[{"name":"Instituto de Astrof\u00edsica e Ci\u00eancias do Espa\u00e7o, Universidade do Porto, CAUP, Rua das Estrelas, P-4150-762 Porto, Portugal"},{"name":"Departamento de F\u00edsica e Astronomia, Faculdade de Ci\u00eancias, Universidade do Porto, Rua Campo Alegre, P-4169-007 Porto, Portugal"}]},{"given":"G","family":"\u00c1vila","sequence":"additional","affiliation":[{"name":"European Southern Observatory, Karl-Schwarzschild-Stra\u00dfe 2, D-85748 Garching bei M\u00fcnchen, Germany"}]}],"member":"286","published-online":{"date-parts":[[2019,11,21]]},"reference":[{"key":"2020112020062678400_bib1","first-page":"1135","volume-title":"Proc.\u00a0SPIE Conf. 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